text: jQuery.validator.setDefaults({
      errorElement: 'div', //default input error message container
      errorClass: 'form-control-feedback', // default input error message class
      focusInvalid: false, // do not focus the last invalid input
      ignore: "",  // validate all fields including form hidden input
  
      errorPlacement: function(error, element) { // render error placement for each input type
          var group = $(element).closest('.m-form__group-sub').length > 0 ? $(element).closest('.m-form__group-sub') : $(element).closest('.m-form__group');
          var help = group.find('.m-form__help');
  
          if (group.find('.form-control-feedback').length !== 0) {
              return;
          }
  
          if (help.length > 0) {
              help.before(error);
          } else {
              if ($(element).closest('.input-group').length > 0) {
                  $(element).closest('.input-group').after(error);
              } else {
                  if ($(element).is(':checkbox')) {
                      $(element).closest('.m-checkbox').find('>span').after(error);
                  } else {
                      $(element).after(error);
                  }                
              }            
          }
      },
  
      highlight: function(element) { // hightlight error inputs
          var group = $(element).closest('.m-form__group-sub').length > 0  ? $(element).closest('.m-form__group-sub') : $(element).closest('.m-form__group');
  
          console.log('add' + group.attr('class'));
  
          group.addClass('has-danger'); // set error class to the control groupx
      },
  
      unhighlight: function(element) { // revert the change done by hightlight
          var group = $(element).closest('.m-form__group-sub').length > 0  ? $(element).closest('.m-form__group-sub') : $(element).closest('.m-form__group');
  
          group.removeClass('has-danger'); // set error class to the control group
      },
  
      success: function(label, element) {
          var group = $(label).closest('.m-form__group-sub').length > 0  ? $(label).closest('.m-form__group-sub') : $(label).closest('.m-form__group');
  
          //group.addClass('has-success').removeClass('has-danger'); // set success class and hide error class
          group.removeClass('has-danger'); // hide error class
          group.find('.form-control-feedback').remove();
      }
  });
  
  jQuery.validator.addMethod("email", function(value, element) {
      if (/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/.test(value)) {
          return true;
      } else {
          return false;
      }
  }, "Please enter a valid Email.");